8
Никита Давыдов
Last seen 2 years ago
Member for 7 years, 10 days
Difficulty Normal
Liked
a comment created by bryukh
for
forum post "calculating islands"
[http://algs4.cs.princeton.edu/15uf/](http://algs4.cs.princeton.edu/15uf/) [http://en.wikipedia.o
Commented a forum post "works in the editor but fails validation" created by
Jiyoqisv
Can you explain how it works?
rotated90 = lambda m : zip(*m[::-1])
I understand that [::-1] - re
